Astatic D-104

From Wikipedia:

Introduced in 1933, the Astatic model D-104 became known for its high frequency response that contributed to better communications audio quality. Early D-104 mikes used a 1" thick case, a large ID tag, and holes for "ring & spring" mounts. The design was modified in April 1937 with smaller tags and reduced thickness. A black "grip" switch stand ("G" Stand) with a metal ID tag was manufactured in January 1938. A solid-state amplifier was incorporated into the "G" stand in the 1960s.

A US Bicentennial model D-104 was manufactured in 1976 featuring a 18k gold plated finish, and an eagle and shield design on the back plate. Also released at that time, was a slightly different chrome version that featured a press to talk bar on the base in addition to the standard "grip" to talk. They were known as the Golden Eagle and the Silver Eagle (respectively). Of the two, only the Silver Eagle has remained in constant production since its inception, and remained one of Astatic's most popular D-104 microphones. There were other variations as well, but production ceased in 2001.

From a contemporary advertisement in Radio Master Catalogue, 1940:

This is Astatic's time-tester and proven microphone - the first practical crystal microphone ever developed - and still preferred by a great host of veteran - amateurs. Model 1-104, it. is safe to assert, is used by more amateurs than any microphone ever made. With high output level -48 dB, possesses definitely reduced feedback tendencies and does not gum up or overload when used for close-talking applications. New type yoke-driven, bridge-mounted Graphoil crystal element, improved shock-proof mounting and barometric compensation.

Speech range frequency response from 500 to 4,000 cycles. Bright chrome finish. Standard equipment includes interchangeable plug and connector, spring cable protector and 7 ft. cable.

List Price $22.50

Wikipedia page about the Astatic company

FRRL blog post on the Astatic D-104

An Astatic catalogue from around 1975 at Preservation Sound